From c84436fd7b69f93739c03dfaf2cc9ac4c34b4ad3 Mon Sep 17 00:00:00 2001
From: Stephan Schulz <stephan.schulz-x2q@rub.de>
Date: Mon, 30 Nov 2020 15:01:48 +0100
Subject: [PATCH] fix Fortran F08 check in CMakeLists.txt

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ca301f..2685195 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ enable_language(CXX)
 enable_language(C)
 
 if (CM_ALL_USE_F08)
-    if (CM_ALL_FORTRAN)
+    if (NOT CM_ALL_FORTRAN)
         message(FATAL_ERROR "Flag for Fortran 08 MPI interface set, while Fortran interface is not enabled!")
     endif (CM_ALL_FORTRAN)
 endif (CM_ALL_USE_F08)
-- 
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